Following in the footsteps of early 20th-century travelers, Michael Portillo explores Switzerland, which was a favorite with Edwardian tourists. He begins in Basle, travels east to visit the industrial regions of Zurich and learns about the engineering feats needed to thread the rail network through the Alps. He takes in the striking beauty of Lake Lucerne, before ending with an ascent by train to Europe's highest station at Jungfraujoch.